Schwéierpapp

Etymology
From +. The first element may be either or, from  and  respectively. While German generalised the feminine in (displacing obsolete ), the Luxembourgish development may have been the other way round, because only  regularly yields. From one should expect either  or. However, it is also possible that these were altered after, which derives from yet another related word, namely.

Noun

 * 1) father-in-law